Adjustable boot for pipes



July 24, 1923.. 1,462,482

0. M. BULLER ADJUSTABLE BOOT FOR PIPES Filed May 6, 1921 lm/enfon Kmww Patented July 24, 1923.

*l'l? res rarest? raiser CIIARILES M. BULLER, OF MILWAUKEE, VIISCGHSIN, ASSIGNOE TO L. 3. MUELLER FUR- NAGE COMPANY, OF MILVJAUKEE, WISCONSIN, GORZPORATION OF WISCONSIN.

ADJUSTABLE BOOT 101 PIPES.

Application filed May 6,

To aZZ to 710m it may concern Be it known that 1, CHARLES M. Bunnnn, a citizen of the United States, and resident of hlilwaukee. in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Adjustable Boots for Pipes, of which the following is a description, re'r'erence being had to the accompanying drawings, which are a part of this specification.

This invention relates to improvements in adjustable boots for pipes.

in heating buildings with hot air furnaces, it is the usual practice to extend round pipes from the furnaces in the cellars to the partition walls and connect said pipes to vertical rectangular pipes w ich extend upwardly through the partitions to the respective rooms to be heated. While the round pipes are of a standard size, the rectangular pipes differ in cross sectional area, due to the different widths of studding' and the siZe of register used. The'round pipes are connected to the rectangular pipes by fittings called boots which, in the ordinary construction, vary in size tofit the different sized rectangular pipes.

It is one of the objects of the present invention to provide an adjustable boot for pipes which may be easily adjusted to fit rectangular pipes of various sizes.

A further objectof the invention is to provide an adjustable boot for pipes which, when adjusted, will be maintained in said adjusted posit-ion.

A "further object of the invention is to provide an adjustable boot for pipes which is of simple construction, is strong and durable, and is well adapted for the purpose described.

With the above and other objects in view, the invention consists of the improved adjustable boot for pipes and its parts and combinations as set forth in the claims, and all equivalents thereof.

In the accompanying drawing, in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is aside view of the improved adjustable boot for pipes shown mounted on the upper end of around pipe;

Fig. 2 is a top view thereofon a larger scale;

Fig. 3 is a vertical sectional view taken 1921. Serial No. 467,394.

on line 33 of: Fig. 2, showing". the parts secured in their final position and a portion of a rectangular pipe connected thereto;

i is a sectional detail view of the upper end portion of the boot before securing the parts in final position; and

Fig. 5 is a sectional detail view on a larger scale, taken on line 55 of Fig. 3.

Referring to the drawings, the numeral 8 indicates an annular collar adapted to telescope over the upper end of a round pipe 9 which is connected to the furnace (not shown). The collar is of the elbow type, and its upper or boot portion 10 is angled upwardly and notched or recessed as at 10 and forms a rectangularopening 11 at its upper end. One portion 12 of the side wall adjacent the notched part of the upper open part 11, is bent inwardly to form a part closure as clearly indicated by the said numeral 12 in Fig. 4;, and its opposite side edge portions 13 extend over the upper notched edges 10 and the said projecting edge portions 13 are flanged downwardly, as clearly shown in Fig. 5, and the flanged portions are slit, as indicated by the numeral 15, so that the closure part 12 may easily be bent upwardly as indicated by the numeral 12. Front and side angular strips 16 and 17 are crimped over the upper -front and side edges of the boot, and depend downwardly therefrom to to. a receiving grooves 18 and 19 extending at right angles to each other. Only the front portions 1? of the side strips 17 are crimped over the upper edge portions of the boot part 10 while the rear portions of said side strips 17 are spaced from the notched portions 10 oi the boot to form slots 14, and are secured to the side portions of the part by soldering, as indicated by the numeral 20. A rear angular strip 21 adjustably mounted on the closure part 12 is of U-shape in cross section. and is provided with forwardly projecting side guide members 22 which close the notches or recesses 10 of the boot part 10. and at their upper edge portions 22 extend over thenpper edges of the boot part 10.

The lower edge portions of the guide members 22 extend through the elongated slots 14: and are bent outwardly to form flanges 23 beneath the side strips 17. The rear angular strip forms a rear groove 24 which, in combination with the grooves 18 In use the rear angular strip 21 is ad justed forwardly or rearwardly to decrease for increase the width of the rectangular grooveway, and when adjusted to fit the lower end of the vertical pipe 25, the inner edge portion of the closure 12 is bent upwardly, as shown by 12 in Fig. 3, to increase the size of the opening 11, the slit flange portions 13 of the closure permitting the easy bending of the closure portion. Said bent portion serves to hold the rear angular strip in adjusted position.

It is to be understood that the adjustable boot is adapted for use with single or double wall vertical stacks.

From the foregoing description it will be seen that the improved. boot may be easily adjusted to fit rectangular pipes of various widths.

A l/Vhat I claim as my invention is:

1. An adjustable boot for pipes, comprising a collar having one end portion of rectangular shape in cross sectionand a side wall extending inwardly, angular strips forming grooves mounted on three sides of the rectangular portion, and an angular strip adj ustably mounted on the fourth side of the rectangular portion and resting on the inwardly extending side wall'to form in connection with the other angular strips a rectangular grooveway to receive one end portion of another pipe.

2. An adjustable boot for pipes, comprising a collar having one end portion of rectangular shape in cross section and a bend able inwardly extending side wall, angular strips forming grooves mounted on three sides of the rectangular portion, and an angular strip adjustably mounted on the upper side of the bendable side wall portion and having end portions which are flanged outwardly and beneath the side angular strips, said angular strips form a grooveway extending around the boot, said inwardly extending side wall adapted to be bent upwardly alongside of the adjustable strip.

3. An adjustable boot for pipes, comprising a collar having one end portion extending at an angle to the collar and being-of rectangular shape in cross section, one of the side walls of the rectangular part extending inwardly and partly covering the rectangular opening of said end, opposite side walls of said rectangular part having upper notched portions, angular strips forming grooves mounted on three sides of the rec tangular portion, said strips on opposite sides being in part spaced fromthe side walls to form elongated slots, and an'angular strip adjustably mounted on the upper side of the inwardly extending part and having opposite end-portions which extend through the elongated slots and are flanged outwardly, said angular strips forming a grooveway extending around the boot, said inwardly extending side wall adapted to be bent upwardly alongside of the adjustable strip when said strip is adjusted in position.

4. An adjustable boot for pipes, comprising a round collar having one end portion ex tending upwardly at an angle from the collar and being of rectangular shape in cross section, one of said side walls of the rectan- .portions which extend over and are secured to the upper edges of the rectangular portion, said strips on opposite sides being in part spaced from the sidewalls to form elongated slots, and an angular stripslidably mounted on the upper side of the inwardly extending part and having opposite end guide portions which overlap upper side edges of the rectangular part and having also other end portions which extend downwardly through the elongated slots and are flanged outwardly beneath the side angular strips, said angular strips forming a grooveway extending around the boot and said inwardly extending side wall adapted to be bent upwardly alongside of the adjustable strip when said strip is in adjusted position. 5. An adjustable boot for pipes, comprising a collar having one end portion of rectangular shape in cross section and a bendable inwardly extending side wall, angular strips mounted on three sides of the rectangular portion. and anangular strip adjustably mounted on the upperside of the bendable side wall portion and having end portions which are flanged outwardly and beneath the side angular strips, said inwardly extending side wall adapted to be bent upwardly alongside of the adjustable strip.

In testimony whereof I ailiX my signature.

CHARLES M. BULLER. 

